Gas burner



Nav. s, 1932. w s, SHAW `1,887,330

GAS BURNER Filed'Nov. 15; 1929 "WIL nmllrrmn y W wv W www.' 'Y `1f M? Jf l ANANfAm/ANANJ "S EL Patented Nov. 8, 1932 UNITED STATES 'PATENT OFFICE Ap'pubmon mea november 15, 1929. serial No. 407,307.

My invention relates to gas burners and has particular reference to gas burners for use stoves and the like.

In the gas burners now used in stoves there is a considerablewaste-of gas due to improper combustion and loss by radiation.

An object of my invention is to provide an improved gas burner having a casing of insulating material which will reduce loss of gas by radiation to a'minimum and prevent the air currents from affecting the combustion of the as.

Another ol ject of my invention is to provide an improved gas burner which will greatly reduce loss of gas by improper combustion.

Another object of my invention is to rovide an improved type of gas burner w ich will confine the fiames and gases to the'bottom of the pan to be heated and prevent the escape of heat and gases into the room.

Further objects will be apparent from the description and drawing forming a part of this specification.

In the drawing- Figure 1 is a top plan view, partly in section, showing my improved gas burner; and

Fig. 2 isa sectional view, partly in eleva-` tion, taken on the line 2-2 ofFig. l.

Referring more particularly to the drawing in detail, 1 is the gas intake pipe having a valve 2 for regulating the flow of gas. The end of the pipe l is joined with a pri- -mary air valve 3 which is connected to the burner pipe 4 and which in turn communicates with the gas burner plate 5. The gas burner plate 5 is provided with lugs 6 for supporting a cylindrical casing 7 -Which may of any heat-,insulating material but is preferably of asbestos. The casing 7 is shown as; being supported not only by the lugs 6 but by the burner pipe 4 over which it may be placed. On the insideof the casing "Ib are llugs or ribs which maybe integral with the casing or may be attached thereto. The lugs 8 support a perforated plate 9, preferablyof cast iron, which lits inside the casing 7 tightly against the sides thereof.. This late is provided with upwardly tapering ho es 10 direct#y the burner pipe the gas is mixe ly above the gas outlet orifices 11 in the burner plate 5.. l

The perforated plate 9l is s aced above the burner plate 5 so as to form elow the same a mixing chamber for the mixture of the gases emerging from theopenings 11 and secondary air which is drawp up through openings 12 in the burner plate` at the bottom of .the casing 11. it has been found most satisfactory to position the erforated plate about halfway between the burner plate 5 and the vessel on the stove to be heated.

The casing 7 which may be made in various sizes so as to fit various burner plates, is of such a height that, when in place, the top thereof will extend to within about a quarter of an inch of the vessel to be heated.

n order to operate the gas burner` the valve 2 is opened allowing gas from the intake pipe 1 to enter the burner pipe 4. in

with primary air which is admitted through the primary'air valve 3. This mixture of as and air emerges from the orifices 11 into t e mixing chamber between the top of the burner plate 5 and the perforated plate 9. While in this chamber this gas and airis further mixed with secondary air which is drawn up through the openings 12 in the burner plateat the bottom of the casing 7. This mixture then passes up through the tapering openings 10 in plate 9,.being ignited above said late. The i `tion.of the ases causes the p ate 9 to be eated andas t e gas goes up through the tapering openings 10 it is heatedso as to form a better mixture and ins ure ,a more perfect combustion. It is also evident that as more gas is admitted more secondary air will be drawn up due to the suction caused b the projected gas. Thus, the amount o air mixed with the gas is automatically regulated by the iow of thegas. It'is also evidentthat as the heat and gases are vconfined verticallyv by a casing of non-heat conducting material practically all the heat will `.be directed against the bottomnf the pan and vessel to be l heated', thereby minimizing any losses due to radiation burner. l

Although I have described but one embodiand resulting in av more eilicient ment of my device many modifications may be made without de arting from the spirit of my invention. Therefore, I do not wish to be limited to the specific form shown.

I claim: v

1. The combination with a gas burner plate having gas outlet orifices, of a tubular casing of heat insulating material, a perforated plate adapted to list inside said casing against the inner side thereof and means to sustain said perforated plate a distance above said burner plate to form a mixing chamber.

2. The combination with a gas burner plate having gas outletorifices, of a tubular Casing of heat insulating material, a circular perforated plate adapted to lit inside said casing against the inner side,thereof, and means to sustain said perforated plate a distance above said burner plate to form a mixing chamber. A

3. The combination with a gas burner plate having as outlet orifices, of a cylindrical casing of eat insulating material, a circular perforated plate adapted to fit inside said casingand adjacent the sides thereof, having perforations directly above the oriiices in said burner plate, and means to sustain saidv perforated plate a distance above said burner plate to form a mixing chamber.

4. The -combination with a gas burner plate having gas outlet orifices, of a cylindrical casing o heat insulating material disposed around and above said burner plate, a

circular perforated plate adapted to lit inside said casing and adjacent the sides thereof, having perforatio'ns directly above the orifices in said burner plate,y and means inwardly projecting from said casing to sustain said perforated plate a distance above said burner plate to form a mixing chamber.

5. The combination with a gas burner plate having gas outlet orifices, of a cylindrical casing of heat insulating material disposed around and above said burner plate,

. a circular perforated plate adapted to fit inside said casing and adjacent the sides thereof, having perforations directly above the orifices in said burner plate, and lugs projecting inwardly fromY said casing to sustain said perforated plate a distance above said burner plate in spaced relation thereto, thereby forming a mixing chamber. A

6. The combination with a gas burner plate having gas outlet orifices, of a cylindrical asbestos casing disposed around and above said burner plate and supported by the same', a circular perforated plate adapted to fit inside said casing and adjacent the sides thereof, having ,perforations directly above the orifices in said burner plate, andlugs projecting inwardly from said casing to sustain said perforated plate a distance above said burner plate in spaced relation thereto, there-V by forming a mixing chamber.

7. The,combination with a gas burner plate having gas outlet orifices, of a tubular casing tapering vents directly above the orifices in said burner plate, and means to sustain said perforated plate a distance above said burner plate in spaced relation thereto, thereby forming a mixing chamber.

8. The combination with a gas burner plate having gas outlet orifices, of a tubular casing of heat insulating material disposed around and above said Aburner plate,. a perforated cast iron plate adapted to fit inside said casing and adjacent the sides thereof, having upwardly tapering vents directly above the orifices in said burner plate, and lugs projecting inwardly from said casing to sustain said perforated plate a distance above said burner plate in spaced relation thereto, thereby forming a mixing chamber.

9. The combination with a gas burner plate having gas outlet orifices of a tubular asbestos casing maintained in position over said burner plate by means thereon, a cast iron plate adapted to fit inside said casing and adjacent the sides thereof, having upwardly tapering vents directly above the orifices in said burner plate, and lugs projecting inwardly from said casing to sustain said perforated plate a distance above said burner plate in spaced relation thereto, thereby forming a mixing chamber.

against` the sides thereof, and means for sus- ,v talning said perforated plate a distance above said burner chamber.

141. The combination with a gas burner plateto forma mixing 10. The combination with a gas burner i i0' plate of a cooking stove;` of a cylindrical cas- I ing of heat insulating material supported said burner plate, a perforated plate adapted to fit inside said casing, and means for sustaining said perforated plate a distance above said burner plate to form a mixing chamber. n

12. The combination with a gas burner plate having gas outlet orifices, of a tubular casing positioned about said plate and extending upwardly therefrom, and a perforated plate ttingwithin said tubular casingE against the inner surfaces thereof at a distance above said burner plate whereby said perforated plate and said tubular casing form a mixing chamber above said burner plate,

said chamber communicating with the out'-l` lll side atmosphere below said perforated plate for supplying air to said chamber.

13. The combination with a vgas burner plate having gas outlet orifices, of a tubular casing of heat insulating material fitting" about said burner plate and extending upand air supply means communicating with i wardly therefrom, and a inner surfaces thereof at a distance above said burner late whereby said perforated plate and said) tubular casing form a mixing chamber above said burner plate.

14. The combination with a as burner plate having gas outlet orifices, o a tubular casing of heat insulating material fitting ber.

perforated plate the outside atmosphere through the lower end fitting within said tubular casing against the of said casing for supplylng air to said chamscribed my name.

about said burner plate and extending upwardly therefrom, and a perforated plate fitting within said tubular casing against the inner surfaces thereof at a distance above l5 said burner plate whereby said perforated plate and said tubular casing form a mixing chamber above said burner plate, said chamber communicating with the outside atmosphere for supplying air to said chamber.

15. The combination with a gas burner plate having gas outlet orices, of a tubular casing of heat insulating material fitting about said burner plate and extending upwardly therefrom, a perforated plate fitting Within said tubular casing against the inner surfaces thereof at a distance above said burner dplate whereby said perforated plate and sai tubular casing form a mixing chamber above said burner plate, and an air supply means communicating with the outside atmosphere through the lower end of said casing for suplplying air to said chamber.

16. e combination with a gas burner plate having gas outlet orifices, of a. `tubular casing of heatinsulating material fitting about said burner plate and extendin wardly therefrom, aperforated plate tting within said tubular casin against the inner surfaces thereof at a distance above said burner plate whereby said perforated late and said tubular casing form a mixing c amber above said burner plate, and an airsupply means extending through said burner plate for-connecting said chamber with the 4.5 outside atmosphere.

17. A gas burner comprising a burner plate having gas outlet orifices, a tubular casing of heat insulating material fitting about said burner plate and extending upwardly therefrom, and a perforated plate fitting within said casing against the inner surfaces thereof at a distance above said burner plate to form a mixing chamber, said burner plate being shaped to permit the atmosphere to enter said chamber through the bottom of said casin 18. The combination with a gas burner WILLIAM S. SHAW. 

